Accession Number : ADA317459

Title :   Main Group Compounds as Amphoteric Ligands to Transition Metals. Synthesis and Molecular Structure of Cr(CO)5 PPh2CH2Ga (CH2CMe3)2. NMe3.

Descriptive Note : Technical rept.,

Corporate Author : STATE UNIV OF NEW YORK AT BUFFALO DEPT OF CHEMISTRY

Personal Author(s) : Beachley, O. T., Jr. ; Banks, Michael A. ; Kopasz, John P. ; Rogers, Robin D.

PDF Url : ADA317459

Report Date : 10 JUL 1996

Pagination or Media Count : 26

Abstract : The reactivities of the group 13 compounds, R2MCH2PPh2 and R2MPPh2, as amphoteric ligands to transition metals have been investigated. The ligands R2MCH2PPh2 (R = CH2CMe3, CH2SiMe3; M = Ga, In) reacted readily with Cr(CO)5NMe3 in benzene solution to form Cr(CO)5PPh2CH2MR2-NMe3 whereas for ligands of the type R2MPPh2 (R = CH2CMe3, CH2SiMe3; M = Al, Ga, In), only the two aluminum compounds and (Me3CCH2)2GaPPh2 formed isolable products of the type Cr(CO)5PPh2MR2-NMe3. However, the gallium and indium ligands with trimethylsilylmethyl substituents (Me3SiCH2)2MPPh2 reacted with NEt4MT(CO)5Cl (MT = Cr, Mo, W) to form products of the type NEt4MT(CO)5PPh2MR2Cl. All new compounds were characterized by their physical properties, C and H analyses, and 1H and 31P NMR and IR spectral properties. The identity of NEt4Cr(CO)5PPh2In(CH2SiMe3)2Cl was further confirmed by the subsequent identification of products from reactions with anhydrous HCl and with MeI. In addition, Cr(CO)5PPh2CH2Ga(CH2CMe3)2.NMe3 was characterized by an X-ray structural study.

Descriptors :   *TRANSITION METALS, *LIGANDS, *MOLECULAR STRUCTURE, *AMPHOTERIC, *CHROMIUM COMPOUNDS, BENZENE, ALUMINUM COMPOUNDS, NUCLEAR MAGNETIC RESONANCE, SOLUTIONS(MIXTURES), METHYL RADICALS, SYNTHESIS, PHYSICAL PROPERTIES, STRUCTURAL PROPERTIES, MOLYBDENUM, X RAYS, NITROGEN, IDENTIFICATION, ALUMINUM, HYDROCARBONS, GALLIUM, SILICON COMPOUNDS, PHENYL RADICALS, PHOSPHORUS, INDIUM, TUNGSTEN, INFRARED SPECTRA, CARBONYL COMPOUNDS.

Subject Categories : Inorganic Chemistry
      Organic Chemistry
      Physical Chemistry
      Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE